I am attempting to learn more about signal integrity for a microcontroller design I am working on. I have done simple designs with just one device attached. Now I want to add more devices. I have done spice simulations and see the increase in noise and ringing as more devices are added. What I am not sure about is how to correct it.
Simple series termination would not seem to be sufficient. However when I look at the few microcontroller designs that have schematics available, that is all that seems to be used. I have seen nothing that uses AC termination for example.
I have tried to find information on designing for multiple items attached to a bus, but it seems to be hard to come by just searching on google. I find plenty of stuff for one or two devices, but what about three or more? Should I use tees or buffers or what. What about stability when component values are varied.
Any recommendations on sites or books that can help me understand how to deal with the >3 case would be good.